store.vhd

基于bpsk的vhdl语言编程与性能仿真

LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL;
USE IEEE.STD_LOGIC_ARITH.ALL;
USE ieee.std_logic_unsigned.all;
 ENTITY  store  IS
   PORT(
        ass :IN STD_LOGIC_vector(5 DOWNTO 0);
         d7,d6,d5,d4,d3,d2,d1,d0  :OUT STD_LOGIC
       );
   END store;

ARCHITECTURE c OF store IS
SIGNAL N  :STD_LOGIC_vector(7 DOWNTO 0);
 BEGIN
     PROCESS(ass)
begin
         CASE  ass  IS
            WHEN  "000000"=>N<="01111111";
            WHEN  "000001"=>N<="10001100";
            WHEN  "000010"=>N<="10011000";
            WHEN  "000011"=>N<="10100100";
            WHEN  "000100"=>N<="10110000";
            WHEN  "000101"=>N<="10111011";
            WHEN  "000110"=>N<="11000110";
            WHEN  "000111"=>N<="11010000";
            WHEN  "001000"=>N<="11011010";
            WHEN  "001001"=>N<="11100010";
            WHEN  "001010"=>N<="11101001";
            WHEN  "001011"=>N<="11110000";
            WHEN  "001100"=>N<="11110101";
            WHEN  "001101"=>N<="11111001";
            WHEN  "001110"=>N<="11111101";
            WHEN  "001111"=>N<="11111110";
            WHEN  "010001"=>N<="11111111";
            WHEN  "010010"=>N<="11111101";
            WHEN  "010011"=>N<="11111001";
            WHEN  "010100"=>N<="11110101";
            WHEN  "010101"=>N<="11110000";
            WHEN  "010110"=>N<="11101001";
            WHEN  "010111"=>N<="11100010";
            WHEN  "011000"=>N<="11011010";
            WHEN  "011001"=>N<="11010000";
            WHEN  "011010"=>N<="11000110";
            WHEN  "011011"=>N<="10111011";
            WHEN  "011100"=>N<="10110000";
            WHEN  "011101"=>N<="10100100";
            WHEN  "011110"=>N<="10011000";
            WHEN  "011111"=>N<="10001100";
            WHEN  "100000"=>N<="10001100";
            WHEN  "100001"=>N<="01111111";
            WHEN  "100010"=>N<="01110010";
            WHEN  "100011"=>N<="01100110";
            WHEN  "100100"=>N<="01011010";
            WHEN  "100101"=>N<="01001110";
            WHEN  "100110"=>N<="01000011";
            WHEN  "100111"=>N<="00111000";
            WHEN  "101000"=>N<="00101110";
            WHEN  "101001"=>N<="00100100";
            WHEN  "101010"=>N<="00011100";
            WHEN  "101011"=>N<="00010101";
            WHEN  "101100"=>N<="00001110";
            WHEN  "101101"=>N<="00001001";
            WHEN  "101110"=>N<="00000101";
            WHEN  "101111"=>N<="00000001";
            WHEN  "110000"=>N<="00000000";
            WHEN  "110001"=>N<="00000000";
            WHEN  "110010"=>N<="00000000";
            WHEN  "110011"=>N<="00000001";
            WHEN  "110100"=>N<="00000101";
            WHEN  "110101"=>N<="00001110";
            WHEN  "110110"=>N<="00010101";
            WHEN  "110111"=>N<="00011100";
            WHEN  "111000"=>N<="00100100";
            WHEN  "111001"=>N<="00101110";
            WHEN  "111010"=>N<="00111000";
            WHEN  "111011"=>N<="01000011";
            WHEN  "111100"=>N<="01001110";
            WHEN  "111101"=>N<="01011010";
            WHEN  "111110"=>N<="01100110";
            when others=>N<="01110010";
end case;
end process;
d7<=N(7);
d6<=N(6);
d5<=N(5);
d4<=N(4);
d3<=N(3);
d2<=N(2);
d1<=N(1);
d0<=N(0);
end c;